水利水电枢纽工程涉水型弃渣场处置方案  

Disposal scheme of residues disposal area of water system-related type in water conservancy and hydropower project

作　　者：龙益辉 梁刚毅 唐玉峰 孙坤君 谢增武 LONG Yihui;LIANG Gangyi;TANG Yufeng;SUN Kunjun;XIE Zengwu(Guangxi Water and Power Design Institute Co., Ltd.,530023, Nanning, China)

机构地区：[1]广西壮族自治区水利电力勘测设计研究院有限责任公司,南宁530023

出　　处：《中国水土保持科学》2022年第1期91-98,共8页Science of Soil and Water Conservation

摘　　要：弃渣场安全及防护是水土保持重点关注问题,涉水型弃渣场受水位、水流流态变化的影响,安全风险更高。研究涉水型弃渣场处置方案,有助于在实践中规避风险,减少水土流失,并为弃渣场设计、施工、评估等提供借鉴。针对已投入运行的水利水电枢纽工程涉水型弃渣场案例,依据现行水土保持及水利水电工程相关标准和规范,确定弃渣场稳定计算工况、允许安全系数和防护工程防洪标准,复核其稳定以及防护措施要求,并结合国内现有相关研究成果归纳总结。结果表明:案例弃渣场稳定计算结果及措施布设均满足现行标准、规范要求。其中,综合利用型案例弃渣场抗滑稳定正常运用工况计算值为1.503,非常运用工况计算值为1.507和1.410;临河型案例弃渣场抗滑稳定正常运用工况计算值为1.23,非常运用工况计算值为1.10和1.07;库区型案例弃渣场抗滑稳定正常运用工况计算值为1.34,非常运用工况计算值为1.14。分析认为:涉水型弃渣场与枢纽工程设计条件关联度高,需综合考虑枢纽所处区域、运行方式及弃渣场与建筑物位置关系等,并应同时满足相关标准和规范要求。[Background]The safety and protection measures in residues disposal areas are key concerns during water and soil conservation in water conservation and hydropower projects.The water level and the water flow pattern increases the safety risk in water system-related disposal areas.Previous research on treatment options for the residues disposal areas focused on the design of protective measures.In this study,we focused on the designs for the safety and stability of water system-related disposal areas.[Methods]We re-inspected current standards and specifications and the stability calculation conditions,allowable safety factors,flood control engineering standards,and protective measures requirements for these areas.We then summarized Chinese case studies of such conditions.[Results]The stability,safety,and design of safety measures for the residue disposal areas in each case met the current standards requirements.The slope stability against sliding for the comprehensive residues disposal area was 1.503 under normal operating conditions,but 1.507(check water level)and 1.410(Rapid drawdown of water level)under abnormal operating conditions.The stability against sliding of the riverside residues disposal area was 1.23 under normal operating conditions,1.1(earthquake),and 1.07(continuous rainfall period)under abnormal operating conditions.The stability against sliding of the reservoir-type residues disposal area was 1.34 under normal operating conditions and 1.14(continuous rainfall period)under abnormal operating conditions.[Conculsions]There is a high correlation between the water system-related disposal areas and the design conditions of the water conservation and hydropower project.The residues disposal area should be designed based on the location,operation mode,and the relationships between the water conservation and hydropower project and the residues disposal area.The designs should not only meet the water and soil conservation regulations,but should also meet national standards and water conservation industry st

关 键 词：弃渣场 涉水型 处置方案 水土保持 水利水电枢纽工程 

分 类 号：S157[农业科学—土壤学] TV61[农业科学—农业基础科学]